title: Letter to the editor.
authors.forename: Tjalke A
authors.initials: TA
authors.lastname: Westra
authors.forename: Sander C
authors.initials: SC
authors.lastname: Fortanier
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Delgleize
authors.forename: Tomas
authors.initials: T
authors.lastname: Mrkvan
mesh_terms: D006801:Humans; D017589:Immunization Programs / Q000191:economics*; D010033:Otitis Media / Q000517:prevention & control*; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines / Q000008:administration & dosage* / Q000191:economics*
chemical_list: D022242:Pneumococcal Vaccines